Friedlander, F.G..
The Wave equation on a curved space-time / - 1st ed / - Cambridge CB2 1RP : Cambridge University Press. - p.282,x :
0-521-20567-0
Wave
B7:55 / L5F;1
The Wave equation on a curved space-time / - 1st ed / - Cambridge CB2 1RP : Cambridge University Press. - p.282,x :
0-521-20567-0
Wave
B7:55 / L5F;1